Speed4/4+ Serial Cards
The Speed4 cards have been tested on Linux machines running kernel 2.6.
Make sure the following features have been enabled in the kernel configuration.
[*] Extended 8250/16550 serial driver options
[*] Support more than 4 legacy serial ports
[*] Support for sharing serial interrupts
Known Issues:
The Linux drivers for the Speed 4 cards are part of the linux kernel. The
drivers in kernel 2.6 are 8250-pci, 8250, and serial_core. These drivers will
assign the /dev/ttySn nodes to the ports on the the cards when the computer is
first booted or when the drivers are first loaded.
The order in which the nodes are assigned are not in sequence. The order for
the first seven ports are ttyS14, ttyS15, ttyS44, ttyS45, ttyS46, ttyS47,
ttyS2. From then on the assignment is sequencial. However this port
assignment is consistant each time the drivers are loaded so applications will
always be able to use the same device node.
This problem is being investigated.